/Engine/Source/Editor/BlueprintGraph/Classes/BlueprintDelegateNodeSpawner.h
Takes care of spawning various nodes associated with delegates. Serves as the "action" portion for certain FBlueprintActionMenuItems. Evolved fromFEdGraphSchemaAction_K2Delegate,FEdGraphSchemaAction_K2AssignDelegate, etc.
class UBlueprintDelegateNodeSpawner : public [UBlueprintFieldNodeSpawner](API\Editor\BlueprintGraph\UBlueprintFieldNodeSpawner)